October 2022 in “Zenodo (CERN European Organization for Nuclear Research)” This study reported that combining Poly-D,L-Lactic Acid with Platelet-Rich Plasma for facial rejuvenation reduced wrinkle severity and improved skin tone and hyperpigmentation in a 45-year-old female patient.
October 2022 in “International journal of medical science and clinical research studies” In this study, the combination of Poly-D,L-Lactic Acid and Platelet-Rich Plasma was reported to be effective for improving wrinkle severity and skin brightness in a 45-year-old woman.
January 2025 in “ARC Journal of Clinical Case Reports” This case report suggests that using encapsulated retinol in polylysine may effectively treat actinic keratosis with minimal irritation, potentially providing a safer alternative for frequent use.
January 2026 in “JPRAS Open” In this pilot study, PDLLA scalp microinjections showed improvement in physician-rated Global Aesthetic Improvement Scale scores over 12-24 weeks for 90% of patients with non-scarring alopecia, with no serious adverse events reported, although findings remain preliminary due to methodological limitations.
February 2021 in “Journal of the Korean Society of Cosmetology” This study found that applying castor oil to damaged hair increased tensile strength and decreased absorbance, indicating improvements in hair texture.